NHS doctor Oscar Duke, who you might recognise from 24 Hours in A&E, has albinism: a lack of melanin in the body.
While Oscar is able to live a normal life, he is disturbed to learn that people in East Africa with his condition are often attacked, abducted and even murdered.
In this shocking and sad This World documentary, Oscar talks about his own experiences before heading to Tanzania, which has an unusually high number of people with albinism.
Why are people being persecuted in this way? And what can be done to change the perception of albinism?